jdb wrote:The USB timer/counter was actually something that I requested - there's some Gert magic in there that means you can route the ARMCTRL FIQ to an arbitrary core and multiplex it with a very basic timer (19.2MHz/24-bit compare-counter) to get around some of the limitations in the OTG core.

Will specifics of the FIQ implementation be released? I currently use GPIO FIQ code on the Raspberry Pi 1 model B for somewhat fast data acquisition, and it'd be great to have some documentation on what needs to change to move it to the new multi-core architecture.

I believe the document detailing the ARM-local peripherals (i.e. implemented at the boundary of the Cortex-A7 block) is still confidential to licensees. I'll see if that's going to change anytime soon.

How do you detect if the warranty bit is set on a Raspberry Pi 2 B? I found a test for Raspberry Pi 1 that I run on Raspberry Pi 2 and according to that the warranty bit is set on my computer, but I have only used microSD-cards with settings according to raspi-config.cat /proc/cpuinfo
gives
Revision : a01041

jdb wrote:
I believe the document detailing the ARM-local peripherals (i.e. implemented at the boundary of the Cortex-A7 block) is still confidential to licensees. I'll see if that's going to change anytime soon.

mob-i-l wrote:How do you detect if the warranty bit is set on a Raspberry Pi 2 B? I found a test for Raspberry Pi 1 that I run on Raspberry Pi 2 and according to that the warranty bit is set on my computer, but I have only used microSD-cards with settings according to raspi-config.cat /proc/cpuinfo
gives
Revision : a01041

davidcoton wrote:Possible solution: keep the overclock settings separate for Pi1 and Pi2, so that transferring to a different version will not activate the wrong set of settings

I also think this is a good idea because it would make it easier to move overclocked SD-cards between Pi1 and Pi2, and vice versa. AFAIK it works like this for the GPU-memory setting and different RAM.

I had a quick look in the forum but i didn't want to post in the "warranty" thread since I don't exactly talk about the same subject.

I had the luck to order a pi2 on its firsts days of availability on RS japanese website (I live in Japan) and it appeared that my pi crashed 2 weeks ago. I use it as a classic media center (openelec) through berryboot and sometimes Raspbian (still by berryboot) to make some tests.
The pi kept giving me a black screen and didn't boot so I first thought that it was caused by a card corruption (indeed it was) but after changing it yesterday I found that the boot stop at a point, doesn't go further and display a "kernel panic".

I didn't overclocked the pi, used a 5V2A power supply, unplugged and replugged the wire to restart the machine - well i usually do a "reboot" via ssh but I didn't have my phone near... -

So I wanted to have your opinion, do you think I can replace it under warranty? Since I didn't do anything abnormal with it (I used to do the same with my Pi 1 and never had any issues).

yes, I bought a new one because I wanted to extend the memory from the beginning. I tried to boot after copying the previous image or by setting up a new installation of berryboot but I got the same result.

yes I used win32DiskImager with an img file (from the zip file on the download section) and it didn't worked.
before that I tried to restore an image backup from weeks ago by the OSX terminal and got a partial boot (which stopped saying kernel panic)